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  <div class="section" id="numpy-copyto">
<h1>numpy.copyto<a class="headerlink" href="#numpy-copyto" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="numpy.copyto">
<code class="sig-prename descclassname">numpy.</code><code class="sig-name descname">copyto</code><span class="sig-paren">(</span><em class="sig-param">dst</em>, <em class="sig-param">src</em>, <em class="sig-param">casting='same_kind'</em>, <em class="sig-param">where=True</em><span class="sig-paren">)</span><a class="headerlink" href="#numpy.copyto" title="Permalink to this definition">¶</a></dt>
<dd><p>Copies values from one array to another, broadcasting as necessary.</p>
<p>Raises a TypeError if the <em class="xref py py-obj">casting</em> rule is violated, and if
<a class="reference internal" href="numpy.where.html#numpy.where" title="numpy.where"><code class="xref py py-obj docutils literal notranslate"><span class="pre">where</span></code></a> is provided, it selects which elements to copy.</p>
<div class="versionadded">
<p><span class="versionmodified added">New in version 1.7.0.</span></p>
</div>
<dl class="field-list">
<dt class="field-odd">Parameters</dt>
<dd class="field-odd"><dl>
<dt><strong>dst</strong><span class="classifier">ndarray</span></dt><dd><p>The array into which values are copied.</p>
</dd>
<dt><strong>src</strong><span class="classifier">array_like</span></dt><dd><p>The array from which values are copied.</p>
</dd>
<dt><strong>casting</strong><span class="classifier">{‘no’, ‘equiv’, ‘safe’, ‘same_kind’, ‘unsafe’}, optional</span></dt><dd><p>Controls what kind of data casting may occur when copying.</p>
<blockquote>
<div><ul class="simple">
<li><p>‘no’ means the data types should not be cast at all.</p></li>
<li><p>‘equiv’ means only byte-order changes are allowed.</p></li>
<li><p>‘safe’ means only casts which can preserve values are allowed.</p></li>
<li><p>‘same_kind’ means only safe casts or casts within a kind,
like float64 to float32, are allowed.</p></li>
<li><p>‘unsafe’ means any data conversions may be done.</p></li>
</ul>
</div></blockquote>
</dd>
<dt><strong>where</strong><span class="classifier">array_like of bool, optional</span></dt><dd><p>A boolean array which is broadcasted to match the dimensions
of <em class="xref py py-obj">dst</em>, and selects elements to copy from <em class="xref py py-obj">src</em> to <em class="xref py py-obj">dst</em>
wherever it contains the value True.</p>
</dd>
</dl>
</dd>
</dl>
</dd></dl>

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